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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-10-06 20:53:16 +0100 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-10-18 14:34:14 -0700 |
| commit | 4de8c93a4751e10737b6af65db42c743228c67a6 (patch) | |
| tree | d18ccc83e8de51ec6d9ed2e4ce7ff34f6245b64a /mm/hugetlb.c | |
| parent | mm: handle shared faults under the VMA lock (diff) | |
| download | wireguard-linux-4de8c93a4751e10737b6af65db42c743228c67a6.tar.xz wireguard-linux-4de8c93a4751e10737b6af65db42c743228c67a6.zip | |
mm: handle COW faults under the VMA lock
If the page is not currently present in the page tables, we need to call
the page fault handler to find out which page we're supposed to COW, so we
need to both check that there is already an anon_vma and that the fault
handler doesn't need the mmap_lock.
Link: https://lkml.kernel.org/r/20231006195318.4087158-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
0 files changed, 0 insertions, 0 deletions